Stainless steels are a very broad group of metals. The name was adopted as a generic term for steel alloys with a minimum of 10.5% chromium. The chromium gives the steel its 'stainless' properties - essentially corrosion resistance. On the surface of the metal, a very thin chromium-rich oxide layer is formed which is inert - i.e. it prevents the steel from rusting. The advantage of stainless steels over plated steels is that, if scratched or damaged, the steel will 'self-repair' as a new oxide layer is formed. In plated steels, scratches in the plate will often lead to corrosion of the steel underneath.
In general, the higher the proportion of chromium, the stronger the corrosion resistance of the steel. In addition to chromium, other metals are added to give the steel particular properties such as strength and malleability. Specifically nickel is used to strengthen the oxide layer.
As for whether they are magnetic, the answer is that it depends. There are several families of stainless steels with different physical properties. A basic stainless steel has a 'ferritic' structure and is magnetic. These are formed from the addition of chromium and can be hardened through the addition of carbon (making them 'martensitic') and are often used in cutlery. However, the most common stainless steels are 'austenitic' - these have a higher chromium content and nickel is also added. It is the nickel which modifies the physical structure of the steel and makes it non-magnetic.
So the answer is yes, the magnetic properties of stainless steel are very dependent on the elements added into the alloy, and specifically the addition of nickel can change the structure from magnetic to non-magnetic.
The following company website has a useful high-level definition of the broad stainless steel categories. http://www.parkrow.org/stainless_steel.htm
Originally posted by: gittyup
I will be buying all new stainless appliances for our new home. I really like the look of stainless for appliances, but not much for anything else. I will be going with GE because the new home already comes with a GE appliance provided by the builder. Now I need to find a way to order them online cheaper than at B&M.
Originally posted by: Ornery
They are NOT made of stainless steel. They're built like every other appliance, with a stainless steel veneer applied. No big deal, and certainly not worth the premium charged for the upgrade, as far as the value of the material goes. Also, they are NOT easy to clean. They show every little fingerprint and smudge.
We did cough up the money for Amana's stainless refrigerator and oven. Our last refrigerator lasted 20 years, and was still running when we pulled it out. The oven was only 10 years old, and barely used. I figured, if these appliances are going to be around here that long, the higher price to get exactly what we want (actually, what my wife wanted), was negligible over that long period of time. In hindsight, I'd buy stainless again. The aesthetics are worth the premium, and could easily help bring more money for the house, when it's sold.
Originally posted by: Ikonomi
I like the look of stainless steel. It's very modern, easy to clean, and to me it has a more "expensive" look than other materials and finishes.
We bought this house with really old appliances, though. They were all matching black, so as my parents have upgraded, they kept the matching look, meaning all the appliances stay black.
Originally posted by: Ornery
They are NOT made of stainless steel. They're built like every other appliance, with a stainless steel veneer applied. No big deal, and certainly not worth the premium charged for the upgrade, as far as the value of the material goes.